1 /******************************************************************************* 2 * Filename: target_core_configfs.c 3 * 4 * This file contains ConfigFS logic for the Generic Target Engine project. 5 * 6 * (c) Copyright 2008-2012 RisingTide Systems LLC. 7 * 8 * Nicholas A. Bellinger <nab@kernel.org> 9 * 10 * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 ****************************************************************************/ 22 23 #include <linux/module.h> 24 #include <linux/moduleparam.h> 25 #include <generated/utsrelease.h> 26 #include <linux/utsname.h> 27 #include <linux/init.h> 28 #include <linux/fs.h> 29 #include <linux/namei.h> 30 #include <linux/slab.h> 31 #include <linux/types.h> 32 #include <linux/delay.h> 33 #include <linux/unistd.h> 34 #include <linux/string.h> 35 #include <linux/parser.h> 36 #include <linux/syscalls.h> 37 #include <linux/configfs.h> 38 #include <linux/spinlock.h> 39 40 #include <target/target_core_base.h> 41 #include <target/target_core_backend.h> 42 #include <target/target_core_fabric.h> 43 #include <target/target_core_fabric_configfs.h> 44 #include <target/target_core_configfs.h> 45 #include <target/configfs_macros.h> 46 47 #include "target_core_internal.h" 48 #include "target_core_alua.h" 49 #include "target_core_pr.h" 50 #include "target_core_rd.h" 51 52 extern struct t10_alua_lu_gp *default_lu_gp; 53 54 static LIST_HEAD(g_tf_list); 55 static DEFINE_MUTEX(g_tf_lock); 56 57 struct target_core_configfs_attribute { 58 struct configfs_attribute attr; 59 ssize_t (*show)(void *, char *); 60 ssize_t (*store)(void *, const char *, size_t); 61 }; 62 63 static struct config_group target_core_hbagroup; 64 static struct config_group alua_group; 65 static struct config_group alua_lu_gps_group; 66 67 static inline struct se_hba * 68 item_to_hba(struct config_item *item) 69 { 70 return container_of(to_config_group(item), struct se_hba, hba_group); 71 } 72 73 /* 74 * Attributes for /sys/kernel/config/target/ 75 */ 76 static ssize_t target_core_attr_show(struct config_item *item, 77 struct configfs_attribute *attr, 78 char *page) 79 { 80 return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 81 " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, 82 utsname()->sysname, utsname()->machine); 83 } 84 85 static struct configfs_item_operations target_core_fabric_item_ops = { 86 .show_attribute = target_core_attr_show, 87 }; 88 89 static struct configfs_attribute target_core_item_attr_version = { 90 .ca_owner = THIS_MODULE, 91 .ca_name = "version", 92 .ca_mode = S_IRUGO, 93 }; 94 95 static struct target_fabric_configfs *target_core_get_fabric( 96 const char *name) 97 { 98 struct target_fabric_configfs *tf; 99 100 if (!name) 101 return NULL; 102 103 mutex_lock(&g_tf_lock); 104 list_for_each_entry(tf, &g_tf_list, tf_list) { 105 if (!strcmp(tf->tf_name, name)) { 106 atomic_inc(&tf->tf_access_cnt); 107 mutex_unlock(&g_tf_lock); 108 return tf; 109 } 110 } 111 mutex_unlock(&g_tf_lock); 112 113 return NULL; 114 } 115 116 /* 117 * Called from struct target_core_group_ops->make_group() 118 */ 119 static struct config_group *target_core_register_fabric( 120 struct config_group *group, 121 const char *name) 122 { 123 struct target_fabric_configfs *tf; 124 int ret; 125 126 pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 127 " %s\n", group, name); 128 /* 129 * Below are some hardcoded request_module() calls to automatically 130 * local fabric modules when the following is called: 131 * 132 * mkdir -p /sys/kernel/config/target/$MODULE_NAME 133 * 134 * Note that this does not limit which TCM fabric module can be 135 * registered, but simply provids auto loading logic for modules with 136 * mkdir(2) system calls with known TCM fabric modules. 137 */ 138 if (!strncmp(name, "iscsi", 5)) { 139 /* 140 * Automatically load the LIO Target fabric module when the 141 * following is called: 142 * 143 * mkdir -p $CONFIGFS/target/iscsi 144 */ 145 ret = request_module("iscsi_target_mod"); 146 if (ret < 0) { 147 pr_err("request_module() failed for" 148 " iscsi_target_mod.ko: %d\n", ret); 149 return ERR_PTR(-EINVAL); 150 } 151 } else if (!strncmp(name, "loopback", 8)) { 152 /* 153 * Automatically load the tcm_loop fabric module when the 154 * following is called: 155 * 156 * mkdir -p $CONFIGFS/target/loopback 157 */ 158 ret = request_module("tcm_loop"); 159 if (ret < 0) { 160 pr_err("request_module() failed for" 161 " tcm_loop.ko: %d\n", ret); 162 return ERR_PTR(-EINVAL); 163 } 164 } 165 166 tf = target_core_get_fabric(name); 167 if (!tf) { 168 pr_err("target_core_get_fabric() failed for %s\n", 169 name); 170 return ERR_PTR(-EINVAL); 171 } 172 pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 173 " %s\n", tf->tf_name); 174 /* 175 * On a successful target_core_get_fabric() look, the returned 176 * struct target_fabric_configfs *tf will contain a usage reference. 177 */ 178 pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 179 &TF_CIT_TMPL(tf)->tfc_wwn_cit); 180 181 tf->tf_group.default_groups = tf->tf_default_groups; 182 tf->tf_group.default_groups[0] = &tf->tf_disc_group; 183 tf->tf_group.default_groups[1] = NULL; 184 185 config_group_init_type_name(&tf->tf_group, name, 186 &TF_CIT_TMPL(tf)->tfc_wwn_cit); 187 config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 188 &TF_CIT_TMPL(tf)->tfc_discovery_cit); 189 190 pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" 191 " %s\n", tf->tf_group.cg_item.ci_name); 192 /* 193 * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() 194 */ 195 tf->tf_ops.tf_subsys = tf->tf_subsys; 196 tf->tf_fabric = &tf->tf_group.cg_item; 197 pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" 198 " for %s\n", name); 199 200 return &tf->tf_group; 201 } 202 203 /* 204 * Called from struct target_core_group_ops->drop_item() 205 */ 206 static void target_core_deregister_fabric( 207 struct config_group *group, 208 struct config_item *item) 209 { 210 struct target_fabric_configfs *tf = container_of( 211 to_config_group(item), struct target_fabric_configfs, tf_group); 212 struct config_group *tf_group; 213 struct config_item *df_item; 214 int i; 215 216 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 217 " tf list\n", config_item_name(item)); 218 219 pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 220 " %s\n", tf->tf_name); 221 atomic_dec(&tf->tf_access_cnt); 222 223 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" 224 " tf->tf_fabric for %s\n", tf->tf_name); 225 tf->tf_fabric = NULL; 226 227 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 228 " %s\n", config_item_name(item)); 229 230 tf_group = &tf->tf_group; 231 for (i = 0; tf_group->default_groups[i]; i++) { 232 df_item = &tf_group->default_groups[i]->cg_item; 233 tf_group->default_groups[i] = NULL; 234 config_item_put(df_item); 235 } 236 config_item_put(item); 237 } 238 239 static struct configfs_group_operations target_core_fabric_group_ops = { 240 .make_group = &target_core_register_fabric, 241 .drop_item = &target_core_deregister_fabric, 242 }; 243 244 /* 245 * All item attributes appearing in /sys/kernel/target/ appear here. 246 */ 247 static struct configfs_attribute *target_core_fabric_item_attrs[] = { 248 &target_core_item_attr_version, 249 NULL, 250 }; 251 252 /* 253 * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 254 */ 255 static struct config_item_type target_core_fabrics_item = { 256 .ct_item_ops = &target_core_fabric_item_ops, 257 .ct_group_ops = &target_core_fabric_group_ops, 258 .ct_attrs = target_core_fabric_item_attrs, 259 .ct_owner = THIS_MODULE, 260 }; 261 262 static struct configfs_subsystem target_core_fabrics = { 263 .su_group = { 264 .cg_item = { 265 .ci_namebuf = "target", 266 .ci_type = &target_core_fabrics_item, 267 }, 268 }, 269 }; 270 271 static struct configfs_subsystem *target_core_subsystem[] = { 272 &target_core_fabrics, 273 NULL, 274 }; 275 276 /*############################################################################## 277 // Start functions called by external Target Fabrics Modules 278 //############################################################################*/ 279 280 /* 281 * First function called by fabric modules to: 282 * 283 * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. 284 * 2) Add struct target_fabric_configfs to g_tf_list 285 * 3) Return struct target_fabric_configfs to fabric module to be passed 286 * into target_fabric_configfs_register(). 287 */ 288 struct target_fabric_configfs *target_fabric_configfs_init( 289 struct module *fabric_mod, 290 const char *name) 291 { 292 struct target_fabric_configfs *tf; 293 294 if (!(name)) { 295 pr_err("Unable to locate passed fabric name\n"); 296 return ERR_PTR(-EINVAL); 297 } 298 if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { 299 pr_err("Passed name: %s exceeds TARGET_FABRIC" 300 "_NAME_SIZE\n", name); 301 return ERR_PTR(-EINVAL); 302 } 303 304 tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 305 if (!tf) 306 return ERR_PTR(-ENOMEM); 307 308 INIT_LIST_HEAD(&tf->tf_list); 309 atomic_set(&tf->tf_access_cnt, 0); 310 /* 311 * Setup the default generic struct config_item_type's (cits) in 312 * struct target_fabric_configfs->tf_cit_tmpl 313 */ 314 tf->tf_module = fabric_mod; 315 target_fabric_setup_cits(tf); 316 317 tf->tf_subsys = target_core_subsystem[0]; 318 snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); 319 320 mutex_lock(&g_tf_lock); 321 list_add_tail(&tf->tf_list, &g_tf_list); 322 mutex_unlock(&g_tf_lock); 323 324 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" 325 ">>>>>>>>>>>>>>\n"); 326 pr_debug("Initialized struct target_fabric_configfs: %p for" 327 " %s\n", tf, tf->tf_name); 328 return tf; 329 } 330 EXPORT_SYMBOL(target_fabric_configfs_init); 331 332 /* 333 * Called by fabric plugins after FAILED target_fabric_configfs_register() call. 334 */ 335 void target_fabric_configfs_free( 336 struct target_fabric_configfs *tf) 337 { 338 mutex_lock(&g_tf_lock); 339 list_del(&tf->tf_list); 340 mutex_unlock(&g_tf_lock); 341 342 kfree(tf); 343 } 344 EXPORT_SYMBOL(target_fabric_configfs_free); 345 346 /* 347 * Perform a sanity check of the passed tf->tf_ops before completing 348 * TCM fabric module registration. 349 */ 350 static int target_fabric_tf_ops_check( 351 struct target_fabric_configfs *tf) 352 { 353 struct target_core_fabric_ops *tfo = &tf->tf_ops; 354 355 if (!tfo->get_fabric_name) { 356 pr_err("Missing tfo->get_fabric_name()\n"); 357 return -EINVAL; 358 } 359 if (!tfo->get_fabric_proto_ident) { 360 pr_err("Missing tfo->get_fabric_proto_ident()\n"); 361 return -EINVAL; 362 } 363 if (!tfo->tpg_get_wwn) { 364 pr_err("Missing tfo->tpg_get_wwn()\n"); 365 return -EINVAL; 366 } 367 if (!tfo->tpg_get_tag) { 368 pr_err("Missing tfo->tpg_get_tag()\n"); 369 return -EINVAL; 370 } 371 if (!tfo->tpg_get_default_depth) { 372 pr_err("Missing tfo->tpg_get_default_depth()\n"); 373 return -EINVAL; 374 } 375 if (!tfo->tpg_get_pr_transport_id) { 376 pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); 377 return -EINVAL; 378 } 379 if (!tfo->tpg_get_pr_transport_id_len) { 380 pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); 381 return -EINVAL; 382 } 383 if (!tfo->tpg_check_demo_mode) { 384 pr_err("Missing tfo->tpg_check_demo_mode()\n"); 385 return -EINVAL; 386 } 387 if (!tfo->tpg_check_demo_mode_cache) { 388 pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 389 return -EINVAL; 390 } 391 if (!tfo->tpg_check_demo_mode_write_protect) { 392 pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 393 return -EINVAL; 394 } 395 if (!tfo->tpg_check_prod_mode_write_protect) { 396 pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 397 return -EINVAL; 398 } 399 if (!tfo->tpg_alloc_fabric_acl) { 400 pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); 401 return -EINVAL; 402 } 403 if (!tfo->tpg_release_fabric_acl) { 404 pr_err("Missing tfo->tpg_release_fabric_acl()\n"); 405 return -EINVAL; 406 } 407 if (!tfo->tpg_get_inst_index) { 408 pr_err("Missing tfo->tpg_get_inst_index()\n"); 409 return -EINVAL; 410 } 411 if (!tfo->release_cmd) { 412 pr_err("Missing tfo->release_cmd()\n"); 413 return -EINVAL; 414 } 415 if (!tfo->shutdown_session) { 416 pr_err("Missing tfo->shutdown_session()\n"); 417 return -EINVAL; 418 } 419 if (!tfo->close_session) { 420 pr_err("Missing tfo->close_session()\n"); 421 return -EINVAL; 422 } 423 if (!tfo->sess_get_index) { 424 pr_err("Missing tfo->sess_get_index()\n"); 425 return -EINVAL; 426 } 427 if (!tfo->write_pending) { 428 pr_err("Missing tfo->write_pending()\n"); 429 return -EINVAL; 430 } 431 if (!tfo->write_pending_status) { 432 pr_err("Missing tfo->write_pending_status()\n"); 433 return -EINVAL; 434 } 435 if (!tfo->set_default_node_attributes) { 436 pr_err("Missing tfo->set_default_node_attributes()\n"); 437 return -EINVAL; 438 } 439 if (!tfo->get_task_tag) { 440 pr_err("Missing tfo->get_task_tag()\n"); 441 return -EINVAL; 442 } 443 if (!tfo->get_cmd_state) { 444 pr_err("Missing tfo->get_cmd_state()\n"); 445 return -EINVAL; 446 } 447 if (!tfo->queue_data_in) { 448 pr_err("Missing tfo->queue_data_in()\n"); 449 return -EINVAL; 450 } 451 if (!tfo->queue_status) { 452 pr_err("Missing tfo->queue_status()\n"); 453 return -EINVAL; 454 } 455 if (!tfo->queue_tm_rsp) { 456 pr_err("Missing tfo->queue_tm_rsp()\n"); 457 return -EINVAL; 458 } 459 /* 460 * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 461 * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 462 * target_core_fabric_configfs.c WWN+TPG group context code. 463 */ 464 if (!tfo->fabric_make_wwn) { 465 pr_err("Missing tfo->fabric_make_wwn()\n"); 466 return -EINVAL; 467 } 468 if (!tfo->fabric_drop_wwn) { 469 pr_err("Missing tfo->fabric_drop_wwn()\n"); 470 return -EINVAL; 471 } 472 if (!tfo->fabric_make_tpg) { 473 pr_err("Missing tfo->fabric_make_tpg()\n"); 474 return -EINVAL; 475 } 476 if (!tfo->fabric_drop_tpg) { 477 pr_err("Missing tfo->fabric_drop_tpg()\n"); 478 return -EINVAL; 479 } 480 481 return 0; 482 } 483 484 /* 485 * Called 2nd from fabric module with returned parameter of 486 * struct target_fabric_configfs * from target_fabric_configfs_init(). 487 * 488 * Upon a successful registration, the new fabric's struct config_item is 489 * return. Also, a pointer to this struct is set in the passed 490 * struct target_fabric_configfs. 491 */ 492 int target_fabric_configfs_register( 493 struct target_fabric_configfs *tf) 494 { 495 int ret; 496 497 if (!tf) { 498 pr_err("Unable to locate target_fabric_configfs" 499 " pointer\n"); 500 return -EINVAL; 501 } 502 if (!tf->tf_subsys) { 503 pr_err("Unable to target struct config_subsystem" 504 " pointer\n"); 505 return -EINVAL; 506 } 507 ret = target_fabric_tf_ops_check(tf); 508 if (ret < 0) 509 return ret; 510 511 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" 512 ">>>>>>>>>>\n"); 513 return 0; 514 } 515 EXPORT_SYMBOL(target_fabric_configfs_register); 516 517 void target_fabric_configfs_deregister( 518 struct target_fabric_configfs *tf) 519 { 520 struct configfs_subsystem *su; 521 522 if (!tf) { 523 pr_err("Unable to locate passed target_fabric_" 524 "configfs\n"); 525 return; 526 } 527 su = tf->tf_subsys; 528 if (!su) { 529 pr_err("Unable to locate passed tf->tf_subsys" 530 " pointer\n"); 531 return; 532 } 533 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" 534 ">>>>>>>>>>>>\n"); 535 mutex_lock(&g_tf_lock); 536 if (atomic_read(&tf->tf_access_cnt)) { 537 mutex_unlock(&g_tf_lock); 538 pr_err("Non zero tf->tf_access_cnt for fabric %s\n", 539 tf->tf_name); 540 BUG(); 541 } 542 list_del(&tf->tf_list); 543 mutex_unlock(&g_tf_lock); 544 545 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" 546 " %s\n", tf->tf_name); 547 tf->tf_module = NULL; 548 tf->tf_subsys = NULL; 549 kfree(tf); 550 551 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" 552 ">>>>>\n"); 553 } 554 EXPORT_SYMBOL(target_fabric_configfs_deregister); 555 556 /*############################################################################## 557 // Stop functions called by external Target Fabrics Modules 558 //############################################################################*/ 559 560 /* Start functions for struct config_item_type target_core_dev_attrib_cit */ 561 562 #define DEF_DEV_ATTRIB_SHOW(_name) \ 563 static ssize_t target_core_dev_show_attr_##_name( \ 564 struct se_dev_attrib *da, \ 565 char *page) \ 566 { \ 567 return snprintf(page, PAGE_SIZE, "%u\n", \ 568 (u32)da->da_dev->dev_attrib._name); \ 569 } 570 571 #define DEF_DEV_ATTRIB_STORE(_name) \ 572 static ssize_t target_core_dev_store_attr_##_name( \ 573 struct se_dev_attrib *da, \ 574 const char *page, \ 575 size_t count) \ 576 { \ 577 unsigned long val; \ 578 int ret; \ 579 \ 580 ret = strict_strtoul(page, 0, &val); \ 581 if (ret < 0) { \ 582 pr_err("strict_strtoul() failed with" \ 583 " ret: %d\n", ret); \ 584 return -EINVAL; \ 585 } \ 586 ret = se_dev_set_##_name(da->da_dev, (u32)val); \ 587 \ 588 return (!ret) ? count : -EINVAL; \ 589 } 590 591 #define DEF_DEV_ATTRIB(_name) \ 592 DEF_DEV_ATTRIB_SHOW(_name); \ 593 DEF_DEV_ATTRIB_STORE(_name); 594 595 #define DEF_DEV_ATTRIB_RO(_name) \ 596 DEF_DEV_ATTRIB_SHOW(_name); 597 598 CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); 599 #define SE_DEV_ATTR(_name, _mode) \ 600 static struct target_core_dev_attrib_attribute \ 601 target_core_dev_attrib_##_name = \ 602 __CONFIGFS_EATTR(_name, _mode, \ 603 target_core_dev_show_attr_##_name, \ 604 target_core_dev_store_attr_##_name); 605 606 #define SE_DEV_ATTR_RO(_name); \ 607 static struct target_core_dev_attrib_attribute \ 608 target_core_dev_attrib_##_name = \ 609 __CONFIGFS_EATTR_RO(_name, \ 610 target_core_dev_show_attr_##_name); 611 612 DEF_DEV_ATTRIB(emulate_model_alias); 613 SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); 614 615 DEF_DEV_ATTRIB(emulate_dpo); 616 SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); 617 618 DEF_DEV_ATTRIB(emulate_fua_write); 619 SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); 620 621 DEF_DEV_ATTRIB(emulate_fua_read); 622 SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); 623 624 DEF_DEV_ATTRIB(emulate_write_cache); 625 SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); 626 627 DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); 628 SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); 629 630 DEF_DEV_ATTRIB(emulate_tas); 631 SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); 632 633 DEF_DEV_ATTRIB(emulate_tpu); 634 SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); 635 636 DEF_DEV_ATTRIB(emulate_tpws); 637 SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); 638 639 DEF_DEV_ATTRIB(enforce_pr_isids); 640 SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); 641 642 DEF_DEV_ATTRIB(is_nonrot); 643 SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); 644 645 DEF_DEV_ATTRIB(emulate_rest_reord); 646 SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); 647 648 DEF_DEV_ATTRIB_RO(hw_block_size); 649 SE_DEV_ATTR_RO(hw_block_size); 650 651 DEF_DEV_ATTRIB(block_size); 652 SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); 653 654 DEF_DEV_ATTRIB_RO(hw_max_sectors); 655 SE_DEV_ATTR_RO(hw_max_sectors); 656 657 DEF_DEV_ATTRIB(fabric_max_sectors); 658 SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); 659 660 DEF_DEV_ATTRIB(optimal_sectors); 661 SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); 662 663 DEF_DEV_ATTRIB_RO(hw_queue_depth); 664 SE_DEV_ATTR_RO(hw_queue_depth); 665 666 DEF_DEV_ATTRIB(queue_depth); 667 SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); 668 669 DEF_DEV_ATTRIB(max_unmap_lba_count); 670 SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); 671 672 DEF_DEV_ATTRIB(max_unmap_block_desc_count); 673 SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); 674 675 DEF_DEV_ATTRIB(unmap_granularity); 676 SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); 677 678 DEF_DEV_ATTRIB(unmap_granularity_alignment); 679 SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); 680 681 DEF_DEV_ATTRIB(max_write_same_len); 682 SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); 683 684 CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); 685 686 static struct configfs_attribute *target_core_dev_attrib_attrs[] = { 687 &target_core_dev_attrib_emulate_model_alias.attr, 688 &target_core_dev_attrib_emulate_dpo.attr, 689 &target_core_dev_attrib_emulate_fua_write.attr, 690 &target_core_dev_attrib_emulate_fua_read.attr, 691 &target_core_dev_attrib_emulate_write_cache.attr, 692 &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, 693 &target_core_dev_attrib_emulate_tas.attr, 694 &target_core_dev_attrib_emulate_tpu.attr, 695 &target_core_dev_attrib_emulate_tpws.attr, 696 &target_core_dev_attrib_enforce_pr_isids.attr, 697 &target_core_dev_attrib_is_nonrot.attr, 698 &target_core_dev_attrib_emulate_rest_reord.attr, 699 &target_core_dev_attrib_hw_block_size.attr, 700 &target_core_dev_attrib_block_size.attr, 701 &target_core_dev_attrib_hw_max_sectors.attr, 702 &target_core_dev_attrib_fabric_max_sectors.attr, 703 &target_core_dev_attrib_optimal_sectors.attr, 704 &target_core_dev_attrib_hw_queue_depth.attr, 705 &target_core_dev_attrib_queue_depth.attr, 706 &target_core_dev_attrib_max_unmap_lba_count.attr, 707 &target_core_dev_attrib_max_unmap_block_desc_count.attr, 708 &target_core_dev_attrib_unmap_granularity.attr, 709 &target_core_dev_attrib_unmap_granularity_alignment.attr, 710 &target_core_dev_attrib_max_write_same_len.attr, 711 NULL, 712 }; 713 714 static struct configfs_item_operations target_core_dev_attrib_ops = { 715 .show_attribute = target_core_dev_attrib_attr_show, 716 .store_attribute = target_core_dev_attrib_attr_store, 717 }; 718 719 static struct config_item_type target_core_dev_attrib_cit = { 720 .ct_item_ops = &target_core_dev_attrib_ops, 721 .ct_attrs = target_core_dev_attrib_attrs, 722 .ct_owner = THIS_MODULE, 723 }; 724 725 /* End functions for struct config_item_type target_core_dev_attrib_cit */ 726 727 /* Start functions for struct config_item_type target_core_dev_wwn_cit */ 728 729 CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); 730 #define SE_DEV_WWN_ATTR(_name, _mode) \ 731 static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ 732 __CONFIGFS_EATTR(_name, _mode, \ 733 target_core_dev_wwn_show_attr_##_name, \ 734 target_core_dev_wwn_store_attr_##_name); 735 736 #define SE_DEV_WWN_ATTR_RO(_name); \ 737 do { \ 738 static struct target_core_dev_wwn_attribute \ 739 target_core_dev_wwn_##_name = \ 740 __CONFIGFS_EATTR_RO(_name, \ 741 target_core_dev_wwn_show_attr_##_name); \ 742 } while (0); 743 744 /* 745 * VPD page 0x80 Unit serial 746 */ 747 static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( 748 struct t10_wwn *t10_wwn, 749 char *page) 750 { 751 return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 752 &t10_wwn->unit_serial[0]); 753 } 754 755 static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( 756 struct t10_wwn *t10_wwn, 757 const char *page, 758 size_t count) 759 { 760 struct se_device *dev = t10_wwn->t10_dev; 761 unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 762 763 /* 764 * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 765 * from the struct scsi_device level firmware, do not allow 766 * VPD Unit Serial to be emulated. 767 * 768 * Note this struct scsi_device could also be emulating VPD 769 * information from its drivers/scsi LLD. But for now we assume 770 * it is doing 'the right thing' wrt a world wide unique 771 * VPD Unit Serial Number that OS dependent multipath can depend on. 772 */ 773 if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 774 pr_err("Underlying SCSI device firmware provided VPD" 775 " Unit Serial, ignoring request\n"); 776 return -EOPNOTSUPP; 777 } 778 779 if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 780 pr_err("Emulated VPD Unit Serial exceeds" 781 " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 782 return -EOVERFLOW; 783 } 784 /* 785 * Check to see if any active $FABRIC_MOD exports exist. If they 786 * do exist, fail here as changing this information on the fly 787 * (underneath the initiator side OS dependent multipath code) 788 * could cause negative effects. 789 */ 790 if (dev->export_count) { 791 pr_err("Unable to set VPD Unit Serial while" 792 " active %d $FABRIC_MOD exports exist\n", 793 dev->export_count); 794 return -EINVAL; 795 } 796 797 /* 798 * This currently assumes ASCII encoding for emulated VPD Unit Serial. 799 * 800 * Also, strip any newline added from the userspace 801 * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 802 */ 803 memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 804 snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 805 snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 806 "%s", strstrip(buf)); 807 dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 808 809 pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 810 " %s\n", dev->t10_wwn.unit_serial); 811 812 return count; 813 } 814 815 SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); 816 817 /* 818 * VPD page 0x83 Protocol Identifier 819 */ 820 static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( 821 struct t10_wwn *t10_wwn, 822 char *page) 823 { 824 struct t10_vpd *vpd; 825 unsigned char buf[VPD_TMP_BUF_SIZE]; 826 ssize_t len = 0; 827 828 memset(buf, 0, VPD_TMP_BUF_SIZE); 829 830 spin_lock(&t10_wwn->t10_vpd_lock); 831 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 832 if (!vpd->protocol_identifier_set) 833 continue; 834 835 transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 836 837 if (len + strlen(buf) >= PAGE_SIZE) 838 break; 839 840 len += sprintf(page+len, "%s", buf); 841 } 842 spin_unlock(&t10_wwn->t10_vpd_lock); 843 844 return len; 845 } 846 847 static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( 848 struct t10_wwn *t10_wwn, 849 const char *page, 850 size_t count) 851 { 852 return -ENOSYS; 853 } 854 855 SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); 856 857 /* 858 * Generic wrapper for dumping VPD identifiers by association. 859 */ 860 #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 861 static ssize_t target_core_dev_wwn_show_attr_##_name( \ 862 struct t10_wwn *t10_wwn, \ 863 char *page) \ 864 { \ 865 struct t10_vpd *vpd; \ 866 unsigned char buf[VPD_TMP_BUF_SIZE]; \ 867 ssize_t len = 0; \ 868 \ 869 spin_lock(&t10_wwn->t10_vpd_lock); \ 870 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 871 if (vpd->association != _assoc) \ 872 continue; \ 873 \ 874 memset(buf, 0, VPD_TMP_BUF_SIZE); \ 875 transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 876 if (len + strlen(buf) >= PAGE_SIZE) \ 877 break; \ 878 len += sprintf(page+len, "%s", buf); \ 879 \ 880 memset(buf, 0, VPD_TMP_BUF_SIZE); \ 881 transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 882 if (len + strlen(buf) >= PAGE_SIZE) \ 883 break; \ 884 len += sprintf(page+len, "%s", buf); \ 885 \ 886 memset(buf, 0, VPD_TMP_BUF_SIZE); \ 887 transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 888 if (len + strlen(buf) >= PAGE_SIZE) \ 889 break; \ 890 len += sprintf(page+len, "%s", buf); \ 891 } \ 892 spin_unlock(&t10_wwn->t10_vpd_lock); \ 893 \ 894 return len; \ 895 } 896 897 /* 898 * VPD page 0x83 Association: Logical Unit 899 */ 900 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 901 902 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( 903 struct t10_wwn *t10_wwn, 904 const char *page, 905 size_t count) 906 { 907 return -ENOSYS; 908 } 909 910 SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); 911 912 /* 913 * VPD page 0x83 Association: Target Port 914 */ 915 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 916 917 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( 918 struct t10_wwn *t10_wwn, 919 const char *page, 920 size_t count) 921 { 922 return -ENOSYS; 923 } 924 925 SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); 926 927 /* 928 * VPD page 0x83 Association: SCSI Target Device 929 */ 930 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 931 932 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( 933 struct t10_wwn *t10_wwn, 934 const char *page, 935 size_t count) 936 { 937 return -ENOSYS; 938 } 939 940 SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); 941 942 CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); 943 944 static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 945 &target_core_dev_wwn_vpd_unit_serial.attr, 946 &target_core_dev_wwn_vpd_protocol_identifier.attr, 947 &target_core_dev_wwn_vpd_assoc_logical_unit.attr, 948 &target_core_dev_wwn_vpd_assoc_target_port.attr, 949 &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, 950 NULL, 951 }; 952 953 static struct configfs_item_operations target_core_dev_wwn_ops = { 954 .show_attribute = target_core_dev_wwn_attr_show, 955 .store_attribute = target_core_dev_wwn_attr_store, 956 }; 957 958 static struct config_item_type target_core_dev_wwn_cit = { 959 .ct_item_ops = &target_core_dev_wwn_ops, 960 .ct_attrs = target_core_dev_wwn_attrs, 961 .ct_owner = THIS_MODULE, 962 }; 963 964 /* End functions for struct config_item_type target_core_dev_wwn_cit */ 965 966 /* Start functions for struct config_item_type target_core_dev_pr_cit */ 967 968 CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); 969 #define SE_DEV_PR_ATTR(_name, _mode) \ 970 static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 971 __CONFIGFS_EATTR(_name, _mode, \ 972 target_core_dev_pr_show_attr_##_name, \ 973 target_core_dev_pr_store_attr_##_name); 974 975 #define SE_DEV_PR_ATTR_RO(_name); \ 976 static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 977 __CONFIGFS_EATTR_RO(_name, \ 978 target_core_dev_pr_show_attr_##_name); 979 980 static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 981 char *page) 982 { 983 struct se_node_acl *se_nacl; 984 struct t10_pr_registration *pr_reg; 985 char i_buf[PR_REG_ISID_ID_LEN]; 986 int prf_isid; 987 988 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 989 990 pr_reg = dev->dev_pr_res_holder; 991 if (!pr_reg) 992 return sprintf(page, "No SPC-3 Reservation holder\n"); 993 994 se_nacl = pr_reg->pr_reg_nacl; 995 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 996 PR_REG_ISID_ID_LEN); 997 998 return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 999 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1000 se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); 1001 } 1002 1003 static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 1004 char *page) 1005 { 1006 struct se_node_acl *se_nacl; 1007 ssize_t len; 1008 1009 se_nacl = dev->dev_reserved_node_acl; 1010 if (se_nacl) { 1011 len = sprintf(page, 1012 "SPC-2 Reservation: %s Initiator: %s\n", 1013 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1014 se_nacl->initiatorname); 1015 } else { 1016 len = sprintf(page, "No SPC-2 Reservation holder\n"); 1017 } 1018 return len; 1019 } 1020 1021 static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, 1022 char *page) 1023 { 1024 int ret; 1025 1026 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1027 return sprintf(page, "Passthrough\n"); 1028 1029 spin_lock(&dev->dev_reservation_lock); 1030 if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1031 ret = target_core_dev_pr_show_spc2_res(dev, page); 1032 else 1033 ret = target_core_dev_pr_show_spc3_res(dev, page); 1034 spin_unlock(&dev->dev_reservation_lock); 1035 return ret; 1036 } 1037 1038 SE_DEV_PR_ATTR_RO(res_holder); 1039 1040 static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( 1041 struct se_device *dev, char *page) 1042 { 1043 ssize_t len = 0; 1044 1045 spin_lock(&dev->dev_reservation_lock); 1046 if (!dev->dev_pr_res_holder) { 1047 len = sprintf(page, "No SPC-3 Reservation holder\n"); 1048 } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 1049 len = sprintf(page, "SPC-3 Reservation: All Target" 1050 " Ports registration\n"); 1051 } else { 1052 len = sprintf(page, "SPC-3 Reservation: Single" 1053 " Target Port registration\n"); 1054 } 1055 1056 spin_unlock(&dev->dev_reservation_lock); 1057 return len; 1058 } 1059 1060 SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); 1061 1062 static ssize_t target_core_dev_pr_show_attr_res_pr_generation( 1063 struct se_device *dev, char *page) 1064 { 1065 return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); 1066 } 1067 1068 SE_DEV_PR_ATTR_RO(res_pr_generation); 1069 1070 /* 1071 * res_pr_holder_tg_port 1072 */ 1073 static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( 1074 struct se_device *dev, char *page) 1075 { 1076 struct se_node_acl *se_nacl; 1077 struct se_lun *lun; 1078 struct se_portal_group *se_tpg; 1079 struct t10_pr_registration *pr_reg; 1080 struct target_core_fabric_ops *tfo; 1081 ssize_t len = 0; 1082 1083 spin_lock(&dev->dev_reservation_lock); 1084 pr_reg = dev->dev_pr_res_holder; 1085 if (!pr_reg) { 1086 len = sprintf(page, "No SPC-3 Reservation holder\n"); 1087 goto out_unlock; 1088 } 1089 1090 se_nacl = pr_reg->pr_reg_nacl; 1091 se_tpg = se_nacl->se_tpg; 1092 lun = pr_reg->pr_reg_tg_pt_lun; 1093 tfo = se_tpg->se_tpg_tfo; 1094 1095 len += sprintf(page+len, "SPC-3 Reservation: %s" 1096 " Target Node Endpoint: %s\n", tfo->get_fabric_name(), 1097 tfo->tpg_get_wwn(se_tpg)); 1098 len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 1099 " Identifier Tag: %hu %s Portal Group Tag: %hu" 1100 " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, 1101 tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), 1102 tfo->get_fabric_name(), lun->unpacked_lun); 1103 1104 out_unlock: 1105 spin_unlock(&dev->dev_reservation_lock); 1106 return len; 1107 } 1108 1109 SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); 1110 1111 static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( 1112 struct se_device *dev, char *page) 1113 { 1114 struct target_core_fabric_ops *tfo; 1115 struct t10_pr_registration *pr_reg; 1116 unsigned char buf[384]; 1117 char i_buf[PR_REG_ISID_ID_LEN]; 1118 ssize_t len = 0; 1119 int reg_count = 0, prf_isid; 1120 1121 len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1122 1123 spin_lock(&dev->t10_pr.registration_lock); 1124 list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 1125 pr_reg_list) { 1126 1127 memset(buf, 0, 384); 1128 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1129 tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1130 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 1131 PR_REG_ISID_ID_LEN); 1132 sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 1133 tfo->get_fabric_name(), 1134 pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? 1135 &i_buf[0] : "", pr_reg->pr_res_key, 1136 pr_reg->pr_res_generation); 1137 1138 if (len + strlen(buf) >= PAGE_SIZE) 1139 break; 1140 1141 len += sprintf(page+len, "%s", buf); 1142 reg_count++; 1143 } 1144 spin_unlock(&dev->t10_pr.registration_lock); 1145 1146 if (!reg_count) 1147 len += sprintf(page+len, "None\n"); 1148 1149 return len; 1150 } 1151 1152 SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); 1153 1154 static ssize_t target_core_dev_pr_show_attr_res_pr_type( 1155 struct se_device *dev, char *page) 1156 { 1157 struct t10_pr_registration *pr_reg; 1158 ssize_t len = 0; 1159 1160 spin_lock(&dev->dev_reservation_lock); 1161 pr_reg = dev->dev_pr_res_holder; 1162 if (pr_reg) { 1163 len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1164 core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1165 } else { 1166 len = sprintf(page, "No SPC-3 Reservation holder\n"); 1167 } 1168 1169 spin_unlock(&dev->dev_reservation_lock); 1170 return len; 1171 } 1172 1173 SE_DEV_PR_ATTR_RO(res_pr_type); 1174 1175 static ssize_t target_core_dev_pr_show_attr_res_type( 1176 struct se_device *dev, char *page) 1177 { 1178 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1179 return sprintf(page, "SPC_PASSTHROUGH\n"); 1180 else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1181 return sprintf(page, "SPC2_RESERVATIONS\n"); 1182 else 1183 return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1184 } 1185 1186 SE_DEV_PR_ATTR_RO(res_type); 1187 1188 static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( 1189 struct se_device *dev, char *page) 1190 { 1191 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1192 return 0; 1193 1194 return sprintf(page, "APTPL Bit Status: %s\n", 1195 (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1196 } 1197 1198 SE_DEV_PR_ATTR_RO(res_aptpl_active); 1199 1200 /* 1201 * res_aptpl_metadata 1202 */ 1203 static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( 1204 struct se_device *dev, char *page) 1205 { 1206 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1207 return 0; 1208 1209 return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1210 } 1211 1212 enum { 1213 Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1214 Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1215 Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1216 Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1217 }; 1218 1219 static match_table_t tokens = { 1220 {Opt_initiator_fabric, "initiator_fabric=%s"}, 1221 {Opt_initiator_node, "initiator_node=%s"}, 1222 {Opt_initiator_sid, "initiator_sid=%s"}, 1223 {Opt_sa_res_key, "sa_res_key=%s"}, 1224 {Opt_res_holder, "res_holder=%d"}, 1225 {Opt_res_type, "res_type=%d"}, 1226 {Opt_res_scope, "res_scope=%d"}, 1227 {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1228 {Opt_mapped_lun, "mapped_lun=%d"}, 1229 {Opt_target_fabric, "target_fabric=%s"}, 1230 {Opt_target_node, "target_node=%s"}, 1231 {Opt_tpgt, "tpgt=%d"}, 1232 {Opt_port_rtpi, "port_rtpi=%d"}, 1233 {Opt_target_lun, "target_lun=%d"}, 1234 {Opt_err, NULL} 1235 }; 1236 1237 static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( 1238 struct se_device *dev, 1239 const char *page, 1240 size_t count) 1241 { 1242 unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 1243 unsigned char *t_fabric = NULL, *t_port = NULL; 1244 char *orig, *ptr, *arg_p, *opts; 1245 substring_t args[MAX_OPT_ARGS]; 1246 unsigned long long tmp_ll; 1247 u64 sa_res_key = 0; 1248 u32 mapped_lun = 0, target_lun = 0; 1249 int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 1250 u16 port_rpti = 0, tpgt = 0; 1251 u8 type = 0, scope; 1252 1253 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) 1254 return 0; 1255 if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1256 return 0; 1257 1258 if (dev->export_count) { 1259 pr_debug("Unable to process APTPL metadata while" 1260 " active fabric exports exist\n"); 1261 return -EINVAL; 1262 } 1263 1264 opts = kstrdup(page, GFP_KERNEL); 1265 if (!opts) 1266 return -ENOMEM; 1267 1268 orig = opts; 1269 while ((ptr = strsep(&opts, ",\n")) != NULL) { 1270 if (!*ptr) 1271 continue; 1272 1273 token = match_token(ptr, tokens, args); 1274 switch (token) { 1275 case Opt_initiator_fabric: 1276 i_fabric = match_strdup(&args[0]); 1277 if (!i_fabric) { 1278 ret = -ENOMEM; 1279 goto out; 1280 } 1281 break; 1282 case Opt_initiator_node: 1283 i_port = match_strdup(&args[0]); 1284 if (!i_port) { 1285 ret = -ENOMEM; 1286 goto out; 1287 } 1288 if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 1289 pr_err("APTPL metadata initiator_node=" 1290 " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1291 PR_APTPL_MAX_IPORT_LEN); 1292 ret = -EINVAL; 1293 break; 1294 } 1295 break; 1296 case Opt_initiator_sid: 1297 isid = match_strdup(&args[0]); 1298 if (!isid) { 1299 ret = -ENOMEM; 1300 goto out; 1301 } 1302 if (strlen(isid) >= PR_REG_ISID_LEN) { 1303 pr_err("APTPL metadata initiator_isid" 1304 "= exceeds PR_REG_ISID_LEN: %d\n", 1305 PR_REG_ISID_LEN); 1306 ret = -EINVAL; 1307 break; 1308 } 1309 break; 1310 case Opt_sa_res_key: 1311 arg_p = match_strdup(&args[0]); 1312 if (!arg_p) { 1313 ret = -ENOMEM; 1314 goto out; 1315 } 1316 ret = strict_strtoull(arg_p, 0, &tmp_ll); 1317 if (ret < 0) { 1318 pr_err("strict_strtoull() failed for" 1319 " sa_res_key=\n"); 1320 goto out; 1321 } 1322 sa_res_key = (u64)tmp_ll; 1323 break; 1324 /* 1325 * PR APTPL Metadata for Reservation 1326 */ 1327 case Opt_res_holder: 1328 match_int(args, &arg); 1329 res_holder = arg; 1330 break; 1331 case Opt_res_type: 1332 match_int(args, &arg); 1333 type = (u8)arg; 1334 break; 1335 case Opt_res_scope: 1336 match_int(args, &arg); 1337 scope = (u8)arg; 1338 break; 1339 case Opt_res_all_tg_pt: 1340 match_int(args, &arg); 1341 all_tg_pt = (int)arg; 1342 break; 1343 case Opt_mapped_lun: 1344 match_int(args, &arg); 1345 mapped_lun = (u32)arg; 1346 break; 1347 /* 1348 * PR APTPL Metadata for Target Port 1349 */ 1350 case Opt_target_fabric: 1351 t_fabric = match_strdup(&args[0]); 1352 if (!t_fabric) { 1353 ret = -ENOMEM; 1354 goto out; 1355 } 1356 break; 1357 case Opt_target_node: 1358 t_port = match_strdup(&args[0]); 1359 if (!t_port) { 1360 ret = -ENOMEM; 1361 goto out; 1362 } 1363 if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 1364 pr_err("APTPL metadata target_node=" 1365 " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1366 PR_APTPL_MAX_TPORT_LEN); 1367 ret = -EINVAL; 1368 break; 1369 } 1370 break; 1371 case Opt_tpgt: 1372 match_int(args, &arg); 1373 tpgt = (u16)arg; 1374 break; 1375 case Opt_port_rtpi: 1376 match_int(args, &arg); 1377 port_rpti = (u16)arg; 1378 break; 1379 case Opt_target_lun: 1380 match_int(args, &arg); 1381 target_lun = (u32)arg; 1382 break; 1383 default: 1384 break; 1385 } 1386 } 1387 1388 if (!i_port || !t_port || !sa_res_key) { 1389 pr_err("Illegal parameters for APTPL registration\n"); 1390 ret = -EINVAL; 1391 goto out; 1392 } 1393 1394 if (res_holder && !(type)) { 1395 pr_err("Illegal PR type: 0x%02x for reservation" 1396 " holder\n", type); 1397 ret = -EINVAL; 1398 goto out; 1399 } 1400 1401 ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 1402 i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1403 res_holder, all_tg_pt, type); 1404 out: 1405 kfree(i_fabric); 1406 kfree(i_port); 1407 kfree(isid); 1408 kfree(t_fabric); 1409 kfree(t_port); 1410 kfree(orig); 1411 return (ret == 0) ? count : ret; 1412 } 1413 1414 SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); 1415 1416 CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); 1417 1418 static struct configfs_attribute *target_core_dev_pr_attrs[] = { 1419 &target_core_dev_pr_res_holder.attr, 1420 &target_core_dev_pr_res_pr_all_tgt_pts.attr, 1421 &target_core_dev_pr_res_pr_generation.attr, 1422 &target_core_dev_pr_res_pr_holder_tg_port.attr, 1423 &target_core_dev_pr_res_pr_registered_i_pts.attr, 1424 &target_core_dev_pr_res_pr_type.attr, 1425 &target_core_dev_pr_res_type.attr, 1426 &target_core_dev_pr_res_aptpl_active.attr, 1427 &target_core_dev_pr_res_aptpl_metadata.attr, 1428 NULL, 1429 }; 1430 1431 static struct configfs_item_operations target_core_dev_pr_ops = { 1432 .show_attribute = target_core_dev_pr_attr_show, 1433 .store_attribute = target_core_dev_pr_attr_store, 1434 }; 1435 1436 static struct config_item_type target_core_dev_pr_cit = { 1437 .ct_item_ops = &target_core_dev_pr_ops, 1438 .ct_attrs = target_core_dev_pr_attrs, 1439 .ct_owner = THIS_MODULE, 1440 }; 1441 1442 /* End functions for struct config_item_type target_core_dev_pr_cit */ 1443 1444 /* Start functions for struct config_item_type target_core_dev_cit */ 1445 1446 static ssize_t target_core_show_dev_info(void *p, char *page) 1447 { 1448 struct se_device *dev = p; 1449 struct se_subsystem_api *t = dev->transport; 1450 int bl = 0; 1451 ssize_t read_bytes = 0; 1452 1453 transport_dump_dev_state(dev, page, &bl); 1454 read_bytes += bl; 1455 read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); 1456 return read_bytes; 1457 } 1458 1459 static struct target_core_configfs_attribute target_core_attr_dev_info = { 1460 .attr = { .ca_owner = THIS_MODULE, 1461 .ca_name = "info", 1462 .ca_mode = S_IRUGO }, 1463 .show = target_core_show_dev_info, 1464 .store = NULL, 1465 }; 1466 1467 static ssize_t target_core_store_dev_control( 1468 void *p, 1469 const char *page, 1470 size_t count) 1471 { 1472 struct se_device *dev = p; 1473 struct se_subsystem_api *t = dev->transport; 1474 1475 return t->set_configfs_dev_params(dev, page, count); 1476 } 1477 1478 static struct target_core_configfs_attribute target_core_attr_dev_control = { 1479 .attr = { .ca_owner = THIS_MODULE, 1480 .ca_name = "control", 1481 .ca_mode = S_IWUSR }, 1482 .show = NULL, 1483 .store = target_core_store_dev_control, 1484 }; 1485 1486 static ssize_t target_core_show_dev_alias(void *p, char *page) 1487 { 1488 struct se_device *dev = p; 1489 1490 if (!(dev->dev_flags & DF_USING_ALIAS)) 1491 return 0; 1492 1493 return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 1494 } 1495 1496 static ssize_t target_core_store_dev_alias( 1497 void *p, 1498 const char *page, 1499 size_t count) 1500 { 1501 struct se_device *dev = p; 1502 struct se_hba *hba = dev->se_hba; 1503 ssize_t read_bytes; 1504 1505 if (count > (SE_DEV_ALIAS_LEN-1)) { 1506 pr_err("alias count: %d exceeds" 1507 " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1508 SE_DEV_ALIAS_LEN-1); 1509 return -EINVAL; 1510 } 1511 1512 read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 1513 if (!read_bytes) 1514 return -EINVAL; 1515 if (dev->dev_alias[read_bytes - 1] == '\n') 1516 dev->dev_alias[read_bytes - 1] = '\0'; 1517 1518 dev->dev_flags |= DF_USING_ALIAS; 1519 1520 pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1521 config_item_name(&hba->hba_group.cg_item), 1522 config_item_name(&dev->dev_group.cg_item), 1523 dev->dev_alias); 1524 1525 return read_bytes; 1526 } 1527 1528 static struct target_core_configfs_attribute target_core_attr_dev_alias = { 1529 .attr = { .ca_owner = THIS_MODULE, 1530 .ca_name = "alias", 1531 .ca_mode = S_IRUGO | S_IWUSR }, 1532 .show = target_core_show_dev_alias, 1533 .store = target_core_store_dev_alias, 1534 }; 1535 1536 static ssize_t target_core_show_dev_udev_path(void *p, char *page) 1537 { 1538 struct se_device *dev = p; 1539 1540 if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 1541 return 0; 1542 1543 return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 1544 } 1545 1546 static ssize_t target_core_store_dev_udev_path( 1547 void *p, 1548 const char *page, 1549 size_t count) 1550 { 1551 struct se_device *dev = p; 1552 struct se_hba *hba = dev->se_hba; 1553 ssize_t read_bytes; 1554 1555 if (count > (SE_UDEV_PATH_LEN-1)) { 1556 pr_err("udev_path count: %d exceeds" 1557 " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1558 SE_UDEV_PATH_LEN-1); 1559 return -EINVAL; 1560 } 1561 1562 read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 1563 "%s", page); 1564 if (!read_bytes) 1565 return -EINVAL; 1566 if (dev->udev_path[read_bytes - 1] == '\n') 1567 dev->udev_path[read_bytes - 1] = '\0'; 1568 1569 dev->dev_flags |= DF_USING_UDEV_PATH; 1570 1571 pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1572 config_item_name(&hba->hba_group.cg_item), 1573 config_item_name(&dev->dev_group.cg_item), 1574 dev->udev_path); 1575 1576 return read_bytes; 1577 } 1578 1579 static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { 1580 .attr = { .ca_owner = THIS_MODULE, 1581 .ca_name = "udev_path", 1582 .ca_mode = S_IRUGO | S_IWUSR }, 1583 .show = target_core_show_dev_udev_path, 1584 .store = target_core_store_dev_udev_path, 1585 }; 1586 1587 static ssize_t target_core_store_dev_enable( 1588 void *p, 1589 const char *page, 1590 size_t count) 1591 { 1592 struct se_device *dev = p; 1593 char *ptr; 1594 int ret; 1595 1596 ptr = strstr(page, "1"); 1597 if (!ptr) { 1598 pr_err("For dev_enable ops, only valid value" 1599 " is \"1\"\n"); 1600 return -EINVAL; 1601 } 1602 1603 ret = target_configure_device(dev); 1604 if (ret) 1605 return ret; 1606 return count; 1607 } 1608 1609 static struct target_core_configfs_attribute target_core_attr_dev_enable = { 1610 .attr = { .ca_owner = THIS_MODULE, 1611 .ca_name = "enable", 1612 .ca_mode = S_IWUSR }, 1613 .show = NULL, 1614 .store = target_core_store_dev_enable, 1615 }; 1616 1617 static ssize_t target_core_show_alua_lu_gp(void *p, char *page) 1618 { 1619 struct se_device *dev = p; 1620 struct config_item *lu_ci; 1621 struct t10_alua_lu_gp *lu_gp; 1622 struct t10_alua_lu_gp_member *lu_gp_mem; 1623 ssize_t len = 0; 1624 1625 lu_gp_mem = dev->dev_alua_lu_gp_mem; 1626 if (!lu_gp_mem) 1627 return 0; 1628 1629 spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1630 lu_gp = lu_gp_mem->lu_gp; 1631 if (lu_gp) { 1632 lu_ci = &lu_gp->lu_gp_group.cg_item; 1633 len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 1634 config_item_name(lu_ci), lu_gp->lu_gp_id); 1635 } 1636 spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1637 1638 return len; 1639 } 1640 1641 static ssize_t target_core_store_alua_lu_gp( 1642 void *p, 1643 const char *page, 1644 size_t count) 1645 { 1646 struct se_device *dev = p; 1647 struct se_hba *hba = dev->se_hba; 1648 struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 1649 struct t10_alua_lu_gp_member *lu_gp_mem; 1650 unsigned char buf[LU_GROUP_NAME_BUF]; 1651 int move = 0; 1652 1653 lu_gp_mem = dev->dev_alua_lu_gp_mem; 1654 if (!lu_gp_mem) 1655 return 0; 1656 1657 if (count > LU_GROUP_NAME_BUF) { 1658 pr_err("ALUA LU Group Alias too large!\n"); 1659 return -EINVAL; 1660 } 1661 memset(buf, 0, LU_GROUP_NAME_BUF); 1662 memcpy(buf, page, count); 1663 /* 1664 * Any ALUA logical unit alias besides "NULL" means we will be 1665 * making a new group association. 1666 */ 1667 if (strcmp(strstrip(buf), "NULL")) { 1668 /* 1669 * core_alua_get_lu_gp_by_name() will increment reference to 1670 * struct t10_alua_lu_gp. This reference is released with 1671 * core_alua_get_lu_gp_by_name below(). 1672 */ 1673 lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 1674 if (!lu_gp_new) 1675 return -ENODEV; 1676 } 1677 1678 spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1679 lu_gp = lu_gp_mem->lu_gp; 1680 if (lu_gp) { 1681 /* 1682 * Clearing an existing lu_gp association, and replacing 1683 * with NULL 1684 */ 1685 if (!lu_gp_new) { 1686 pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 1687 " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 1688 " %hu\n", 1689 config_item_name(&hba->hba_group.cg_item), 1690 config_item_name(&dev->dev_group.cg_item), 1691 config_item_name(&lu_gp->lu_gp_group.cg_item), 1692 lu_gp->lu_gp_id); 1693 1694 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1695 spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1696 1697 return count; 1698 } 1699 /* 1700 * Removing existing association of lu_gp_mem with lu_gp 1701 */ 1702 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1703 move = 1; 1704 } 1705 /* 1706 * Associate lu_gp_mem with lu_gp_new. 1707 */ 1708 __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 1709 spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1710 1711 pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 1712 " core/alua/lu_gps/%s, ID: %hu\n", 1713 (move) ? "Moving" : "Adding", 1714 config_item_name(&hba->hba_group.cg_item), 1715 config_item_name(&dev->dev_group.cg_item), 1716 config_item_name(&lu_gp_new->lu_gp_group.cg_item), 1717 lu_gp_new->lu_gp_id); 1718 1719 core_alua_put_lu_gp_from_name(lu_gp_new); 1720 return count; 1721 } 1722 1723 static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { 1724 .attr = { .ca_owner = THIS_MODULE, 1725 .ca_name = "alua_lu_gp", 1726 .ca_mode = S_IRUGO | S_IWUSR }, 1727 .show = target_core_show_alua_lu_gp, 1728 .store = target_core_store_alua_lu_gp, 1729 }; 1730 1731 static struct configfs_attribute *lio_core_dev_attrs[] = { 1732 &target_core_attr_dev_info.attr, 1733 &target_core_attr_dev_control.attr, 1734 &target_core_attr_dev_alias.attr, 1735 &target_core_attr_dev_udev_path.attr, 1736 &target_core_attr_dev_enable.attr, 1737 &target_core_attr_dev_alua_lu_gp.attr, 1738 NULL, 1739 }; 1740 1741 static void target_core_dev_release(struct config_item *item) 1742 { 1743 struct config_group *dev_cg = to_config_group(item); 1744 struct se_device *dev = 1745 container_of(dev_cg, struct se_device, dev_group); 1746 1747 kfree(dev_cg->default_groups); 1748 target_free_device(dev); 1749 } 1750 1751 static ssize_t target_core_dev_show(struct config_item *item, 1752 struct configfs_attribute *attr, 1753 char *page) 1754 { 1755 struct config_group *dev_cg = to_config_group(item); 1756 struct se_device *dev = 1757 container_of(dev_cg, struct se_device, dev_group); 1758 struct target_core_configfs_attribute *tc_attr = container_of( 1759 attr, struct target_core_configfs_attribute, attr); 1760 1761 if (!tc_attr->show) 1762 return -EINVAL; 1763 1764 return tc_attr->show(dev, page); 1765 } 1766 1767 static ssize_t target_core_dev_store(struct config_item *item, 1768 struct configfs_attribute *attr, 1769 const char *page, size_t count) 1770 { 1771 struct config_group *dev_cg = to_config_group(item); 1772 struct se_device *dev = 1773 container_of(dev_cg, struct se_device, dev_group); 1774 struct target_core_configfs_attribute *tc_attr = container_of( 1775 attr, struct target_core_configfs_attribute, attr); 1776 1777 if (!tc_attr->store) 1778 return -EINVAL; 1779 1780 return tc_attr->store(dev, page, count); 1781 } 1782 1783 static struct configfs_item_operations target_core_dev_item_ops = { 1784 .release = target_core_dev_release, 1785 .show_attribute = target_core_dev_show, 1786 .store_attribute = target_core_dev_store, 1787 }; 1788 1789 static struct config_item_type target_core_dev_cit = { 1790 .ct_item_ops = &target_core_dev_item_ops, 1791 .ct_attrs = lio_core_dev_attrs, 1792 .ct_owner = THIS_MODULE, 1793 }; 1794 1795 /* End functions for struct config_item_type target_core_dev_cit */ 1796 1797 /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 1798 1799 CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); 1800 #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ 1801 static struct target_core_alua_lu_gp_attribute \ 1802 target_core_alua_lu_gp_##_name = \ 1803 __CONFIGFS_EATTR(_name, _mode, \ 1804 target_core_alua_lu_gp_show_attr_##_name, \ 1805 target_core_alua_lu_gp_store_attr_##_name); 1806 1807 #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ 1808 static struct target_core_alua_lu_gp_attribute \ 1809 target_core_alua_lu_gp_##_name = \ 1810 __CONFIGFS_EATTR_RO(_name, \ 1811 target_core_alua_lu_gp_show_attr_##_name); 1812 1813 /* 1814 * lu_gp_id 1815 */ 1816 static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( 1817 struct t10_alua_lu_gp *lu_gp, 1818 char *page) 1819 { 1820 if (!lu_gp->lu_gp_valid_id) 1821 return 0; 1822 1823 return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 1824 } 1825 1826 static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( 1827 struct t10_alua_lu_gp *lu_gp, 1828 const char *page, 1829 size_t count) 1830 { 1831 struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 1832 unsigned long lu_gp_id; 1833 int ret; 1834 1835 ret = strict_strtoul(page, 0, &lu_gp_id); 1836 if (ret < 0) { 1837 pr_err("strict_strtoul() returned %d for" 1838 " lu_gp_id\n", ret); 1839 return -EINVAL; 1840 } 1841 if (lu_gp_id > 0x0000ffff) { 1842 pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 1843 " 0x0000ffff\n", lu_gp_id); 1844 return -EINVAL; 1845 } 1846 1847 ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 1848 if (ret < 0) 1849 return -EINVAL; 1850 1851 pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 1852 " Group: core/alua/lu_gps/%s to ID: %hu\n", 1853 config_item_name(&alua_lu_gp_cg->cg_item), 1854 lu_gp->lu_gp_id); 1855 1856 return count; 1857 } 1858 1859 SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); 1860 1861 /* 1862 * members 1863 */ 1864 static ssize_t target_core_alua_lu_gp_show_attr_members( 1865 struct t10_alua_lu_gp *lu_gp, 1866 char *page) 1867 { 1868 struct se_device *dev; 1869 struct se_hba *hba; 1870 struct t10_alua_lu_gp_member *lu_gp_mem; 1871 ssize_t len = 0, cur_len; 1872 unsigned char buf[LU_GROUP_NAME_BUF]; 1873 1874 memset(buf, 0, LU_GROUP_NAME_BUF); 1875 1876 spin_lock(&lu_gp->lu_gp_lock); 1877 list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 1878 dev = lu_gp_mem->lu_gp_mem_dev; 1879 hba = dev->se_hba; 1880 1881 cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 1882 config_item_name(&hba->hba_group.cg_item), 1883 config_item_name(&dev->dev_group.cg_item)); 1884 cur_len++; /* Extra byte for NULL terminator */ 1885 1886 if ((cur_len + len) > PAGE_SIZE) { 1887 pr_warn("Ran out of lu_gp_show_attr" 1888 "_members buffer\n"); 1889 break; 1890 } 1891 memcpy(page+len, buf, cur_len); 1892 len += cur_len; 1893 } 1894 spin_unlock(&lu_gp->lu_gp_lock); 1895 1896 return len; 1897 } 1898 1899 SE_DEV_ALUA_LU_ATTR_RO(members); 1900 1901 CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); 1902 1903 static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 1904 &target_core_alua_lu_gp_lu_gp_id.attr, 1905 &target_core_alua_lu_gp_members.attr, 1906 NULL, 1907 }; 1908 1909 static void target_core_alua_lu_gp_release(struct config_item *item) 1910 { 1911 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 1912 struct t10_alua_lu_gp, lu_gp_group); 1913 1914 core_alua_free_lu_gp(lu_gp); 1915 } 1916 1917 static struct configfs_item_operations target_core_alua_lu_gp_ops = { 1918 .release = target_core_alua_lu_gp_release, 1919 .show_attribute = target_core_alua_lu_gp_attr_show, 1920 .store_attribute = target_core_alua_lu_gp_attr_store, 1921 }; 1922 1923 static struct config_item_type target_core_alua_lu_gp_cit = { 1924 .ct_item_ops = &target_core_alua_lu_gp_ops, 1925 .ct_attrs = target_core_alua_lu_gp_attrs, 1926 .ct_owner = THIS_MODULE, 1927 }; 1928 1929 /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 1930 1931 /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 1932 1933 static struct config_group *target_core_alua_create_lu_gp( 1934 struct config_group *group, 1935 const char *name) 1936 { 1937 struct t10_alua_lu_gp *lu_gp; 1938 struct config_group *alua_lu_gp_cg = NULL; 1939 struct config_item *alua_lu_gp_ci = NULL; 1940 1941 lu_gp = core_alua_allocate_lu_gp(name, 0); 1942 if (IS_ERR(lu_gp)) 1943 return NULL; 1944 1945 alua_lu_gp_cg = &lu_gp->lu_gp_group; 1946 alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 1947 1948 config_group_init_type_name(alua_lu_gp_cg, name, 1949 &target_core_alua_lu_gp_cit); 1950 1951 pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 1952 " Group: core/alua/lu_gps/%s\n", 1953 config_item_name(alua_lu_gp_ci)); 1954 1955 return alua_lu_gp_cg; 1956 1957 } 1958 1959 static void target_core_alua_drop_lu_gp( 1960 struct config_group *group, 1961 struct config_item *item) 1962 { 1963 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 1964 struct t10_alua_lu_gp, lu_gp_group); 1965 1966 pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 1967 " Group: core/alua/lu_gps/%s, ID: %hu\n", 1968 config_item_name(item), lu_gp->lu_gp_id); 1969 /* 1970 * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 1971 * -> target_core_alua_lu_gp_release() 1972 */ 1973 config_item_put(item); 1974 } 1975 1976 static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 1977 .make_group = &target_core_alua_create_lu_gp, 1978 .drop_item = &target_core_alua_drop_lu_gp, 1979 }; 1980 1981 static struct config_item_type target_core_alua_lu_gps_cit = { 1982 .ct_item_ops = NULL, 1983 .ct_group_ops = &target_core_alua_lu_gps_group_ops, 1984 .ct_owner = THIS_MODULE, 1985 }; 1986 1987 /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 1988 1989 /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 1990 1991 CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); 1992 #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ 1993 static struct target_core_alua_tg_pt_gp_attribute \ 1994 target_core_alua_tg_pt_gp_##_name = \ 1995 __CONFIGFS_EATTR(_name, _mode, \ 1996 target_core_alua_tg_pt_gp_show_attr_##_name, \ 1997 target_core_alua_tg_pt_gp_store_attr_##_name); 1998 1999 #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ 2000 static struct target_core_alua_tg_pt_gp_attribute \ 2001 target_core_alua_tg_pt_gp_##_name = \ 2002 __CONFIGFS_EATTR_RO(_name, \ 2003 target_core_alua_tg_pt_gp_show_attr_##_name); 2004 2005 /* 2006 * alua_access_state 2007 */ 2008 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( 2009 struct t10_alua_tg_pt_gp *tg_pt_gp, 2010 char *page) 2011 { 2012 return sprintf(page, "%d\n", 2013 atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); 2014 } 2015 2016 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( 2017 struct t10_alua_tg_pt_gp *tg_pt_gp, 2018 const char *page, 2019 size_t count) 2020 { 2021 struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2022 unsigned long tmp; 2023 int new_state, ret; 2024 2025 if (!tg_pt_gp->tg_pt_gp_valid_id) { 2026 pr_err("Unable to do implict ALUA on non valid" 2027 " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2028 return -EINVAL; 2029 } 2030 2031 ret = strict_strtoul(page, 0, &tmp); 2032 if (ret < 0) { 2033 pr_err("Unable to extract new ALUA access state from" 2034 " %s\n", page); 2035 return -EINVAL; 2036 } 2037 new_state = (int)tmp; 2038 2039 if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { 2040 pr_err("Unable to process implict configfs ALUA" 2041 " transition while TPGS_IMPLICT_ALUA is disabled\n"); 2042 return -EINVAL; 2043 } 2044 2045 ret = core_alua_do_port_transition(tg_pt_gp, dev, 2046 NULL, NULL, new_state, 0); 2047 return (!ret) ? count : -EINVAL; 2048 } 2049 2050 SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); 2051 2052 /* 2053 * alua_access_status 2054 */ 2055 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( 2056 struct t10_alua_tg_pt_gp *tg_pt_gp, 2057 char *page) 2058 { 2059 return sprintf(page, "%s\n", 2060 core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2061 } 2062 2063 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( 2064 struct t10_alua_tg_pt_gp *tg_pt_gp, 2065 const char *page, 2066 size_t count) 2067 { 2068 unsigned long tmp; 2069 int new_status, ret; 2070 2071 if (!tg_pt_gp->tg_pt_gp_valid_id) { 2072 pr_err("Unable to do set ALUA access status on non" 2073 " valid tg_pt_gp ID: %hu\n", 2074 tg_pt_gp->tg_pt_gp_valid_id); 2075 return -EINVAL; 2076 } 2077 2078 ret = strict_strtoul(page, 0, &tmp); 2079 if (ret < 0) { 2080 pr_err("Unable to extract new ALUA access status" 2081 " from %s\n", page); 2082 return -EINVAL; 2083 } 2084 new_status = (int)tmp; 2085 2086 if ((new_status != ALUA_STATUS_NONE) && 2087 (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && 2088 (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { 2089 pr_err("Illegal ALUA access status: 0x%02x\n", 2090 new_status); 2091 return -EINVAL; 2092 } 2093 2094 tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2095 return count; 2096 } 2097 2098 SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); 2099 2100 /* 2101 * alua_access_type 2102 */ 2103 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( 2104 struct t10_alua_tg_pt_gp *tg_pt_gp, 2105 char *page) 2106 { 2107 return core_alua_show_access_type(tg_pt_gp, page); 2108 } 2109 2110 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( 2111 struct t10_alua_tg_pt_gp *tg_pt_gp, 2112 const char *page, 2113 size_t count) 2114 { 2115 return core_alua_store_access_type(tg_pt_gp, page, count); 2116 } 2117 2118 SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); 2119 2120 /* 2121 * alua_write_metadata 2122 */ 2123 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( 2124 struct t10_alua_tg_pt_gp *tg_pt_gp, 2125 char *page) 2126 { 2127 return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); 2128 } 2129 2130 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( 2131 struct t10_alua_tg_pt_gp *tg_pt_gp, 2132 const char *page, 2133 size_t count) 2134 { 2135 unsigned long tmp; 2136 int ret; 2137 2138 ret = strict_strtoul(page, 0, &tmp); 2139 if (ret < 0) { 2140 pr_err("Unable to extract alua_write_metadata\n"); 2141 return -EINVAL; 2142 } 2143 2144 if ((tmp != 0) && (tmp != 1)) { 2145 pr_err("Illegal value for alua_write_metadata:" 2146 " %lu\n", tmp); 2147 return -EINVAL; 2148 } 2149 tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2150 2151 return count; 2152 } 2153 2154 SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); 2155 2156 2157 2158 /* 2159 * nonop_delay_msecs 2160 */ 2161 static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( 2162 struct t10_alua_tg_pt_gp *tg_pt_gp, 2163 char *page) 2164 { 2165 return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); 2166 2167 } 2168 2169 static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( 2170 struct t10_alua_tg_pt_gp *tg_pt_gp, 2171 const char *page, 2172 size_t count) 2173 { 2174 return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); 2175 } 2176 2177 SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); 2178 2179 /* 2180 * trans_delay_msecs 2181 */ 2182 static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( 2183 struct t10_alua_tg_pt_gp *tg_pt_gp, 2184 char *page) 2185 { 2186 return core_alua_show_trans_delay_msecs(tg_pt_gp, page); 2187 } 2188 2189 static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( 2190 struct t10_alua_tg_pt_gp *tg_pt_gp, 2191 const char *page, 2192 size_t count) 2193 { 2194 return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); 2195 } 2196 2197 SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); 2198 2199 /* 2200 * implict_trans_secs 2201 */ 2202 static ssize_t target_core_alua_tg_pt_gp_show_attr_implict_trans_secs( 2203 struct t10_alua_tg_pt_gp *tg_pt_gp, 2204 char *page) 2205 { 2206 return core_alua_show_implict_trans_secs(tg_pt_gp, page); 2207 } 2208 2209 static ssize_t target_core_alua_tg_pt_gp_store_attr_implict_trans_secs( 2210 struct t10_alua_tg_pt_gp *tg_pt_gp, 2211 const char *page, 2212 size_t count) 2213 { 2214 return core_alua_store_implict_trans_secs(tg_pt_gp, page, count); 2215 } 2216 2217 SE_DEV_ALUA_TG_PT_ATTR(implict_trans_secs, S_IRUGO | S_IWUSR); 2218 2219 /* 2220 * preferred 2221 */ 2222 2223 static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( 2224 struct t10_alua_tg_pt_gp *tg_pt_gp, 2225 char *page) 2226 { 2227 return core_alua_show_preferred_bit(tg_pt_gp, page); 2228 } 2229 2230 static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( 2231 struct t10_alua_tg_pt_gp *tg_pt_gp, 2232 const char *page, 2233 size_t count) 2234 { 2235 return core_alua_store_preferred_bit(tg_pt_gp, page, count); 2236 } 2237 2238 SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); 2239 2240 /* 2241 * tg_pt_gp_id 2242 */ 2243 static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( 2244 struct t10_alua_tg_pt_gp *tg_pt_gp, 2245 char *page) 2246 { 2247 if (!tg_pt_gp->tg_pt_gp_valid_id) 2248 return 0; 2249 2250 return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2251 } 2252 2253 static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( 2254 struct t10_alua_tg_pt_gp *tg_pt_gp, 2255 const char *page, 2256 size_t count) 2257 { 2258 struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2259 unsigned long tg_pt_gp_id; 2260 int ret; 2261 2262 ret = strict_strtoul(page, 0, &tg_pt_gp_id); 2263 if (ret < 0) { 2264 pr_err("strict_strtoul() returned %d for" 2265 " tg_pt_gp_id\n", ret); 2266 return -EINVAL; 2267 } 2268 if (tg_pt_gp_id > 0x0000ffff) { 2269 pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" 2270 " 0x0000ffff\n", tg_pt_gp_id); 2271 return -EINVAL; 2272 } 2273 2274 ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2275 if (ret < 0) 2276 return -EINVAL; 2277 2278 pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2279 "core/alua/tg_pt_gps/%s to ID: %hu\n", 2280 config_item_name(&alua_tg_pt_gp_cg->cg_item), 2281 tg_pt_gp->tg_pt_gp_id); 2282 2283 return count; 2284 } 2285 2286 SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); 2287 2288 /* 2289 * members 2290 */ 2291 static ssize_t target_core_alua_tg_pt_gp_show_attr_members( 2292 struct t10_alua_tg_pt_gp *tg_pt_gp, 2293 char *page) 2294 { 2295 struct se_port *port; 2296 struct se_portal_group *tpg; 2297 struct se_lun *lun; 2298 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 2299 ssize_t len = 0, cur_len; 2300 unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2301 2302 memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2303 2304 spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2305 list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, 2306 tg_pt_gp_mem_list) { 2307 port = tg_pt_gp_mem->tg_pt; 2308 tpg = port->sep_tpg; 2309 lun = port->sep_lun; 2310 2311 cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 2312 "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), 2313 tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2314 tpg->se_tpg_tfo->tpg_get_tag(tpg), 2315 config_item_name(&lun->lun_group.cg_item)); 2316 cur_len++; /* Extra byte for NULL terminator */ 2317 2318 if ((cur_len + len) > PAGE_SIZE) { 2319 pr_warn("Ran out of lu_gp_show_attr" 2320 "_members buffer\n"); 2321 break; 2322 } 2323 memcpy(page+len, buf, cur_len); 2324 len += cur_len; 2325 } 2326 spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2327 2328 return len; 2329 } 2330 2331 SE_DEV_ALUA_TG_PT_ATTR_RO(members); 2332 2333 CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, 2334 tg_pt_gp_group); 2335 2336 static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 2337 &target_core_alua_tg_pt_gp_alua_access_state.attr, 2338 &target_core_alua_tg_pt_gp_alua_access_status.attr, 2339 &target_core_alua_tg_pt_gp_alua_access_type.attr, 2340 &target_core_alua_tg_pt_gp_alua_write_metadata.attr, 2341 &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, 2342 &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, 2343 &target_core_alua_tg_pt_gp_implict_trans_secs.attr, 2344 &target_core_alua_tg_pt_gp_preferred.attr, 2345 &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, 2346 &target_core_alua_tg_pt_gp_members.attr, 2347 NULL, 2348 }; 2349 2350 static void target_core_alua_tg_pt_gp_release(struct config_item *item) 2351 { 2352 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2353 struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2354 2355 core_alua_free_tg_pt_gp(tg_pt_gp); 2356 } 2357 2358 static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 2359 .release = target_core_alua_tg_pt_gp_release, 2360 .show_attribute = target_core_alua_tg_pt_gp_attr_show, 2361 .store_attribute = target_core_alua_tg_pt_gp_attr_store, 2362 }; 2363 2364 static struct config_item_type target_core_alua_tg_pt_gp_cit = { 2365 .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2366 .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2367 .ct_owner = THIS_MODULE, 2368 }; 2369 2370 /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2371 2372 /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2373 2374 static struct config_group *target_core_alua_create_tg_pt_gp( 2375 struct config_group *group, 2376 const char *name) 2377 { 2378 struct t10_alua *alua = container_of(group, struct t10_alua, 2379 alua_tg_pt_gps_group); 2380 struct t10_alua_tg_pt_gp *tg_pt_gp; 2381 struct config_group *alua_tg_pt_gp_cg = NULL; 2382 struct config_item *alua_tg_pt_gp_ci = NULL; 2383 2384 tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 2385 if (!tg_pt_gp) 2386 return NULL; 2387 2388 alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2389 alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2390 2391 config_group_init_type_name(alua_tg_pt_gp_cg, name, 2392 &target_core_alua_tg_pt_gp_cit); 2393 2394 pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2395 " Group: alua/tg_pt_gps/%s\n", 2396 config_item_name(alua_tg_pt_gp_ci)); 2397 2398 return alua_tg_pt_gp_cg; 2399 } 2400 2401 static void target_core_alua_drop_tg_pt_gp( 2402 struct config_group *group, 2403 struct config_item *item) 2404 { 2405 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2406 struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2407 2408 pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2409 " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2410 config_item_name(item), tg_pt_gp->tg_pt_gp_id); 2411 /* 2412 * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 2413 * -> target_core_alua_tg_pt_gp_release(). 2414 */ 2415 config_item_put(item); 2416 } 2417 2418 static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2419 .make_group = &target_core_alua_create_tg_pt_gp, 2420 .drop_item = &target_core_alua_drop_tg_pt_gp, 2421 }; 2422 2423 static struct config_item_type target_core_alua_tg_pt_gps_cit = { 2424 .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, 2425 .ct_owner = THIS_MODULE, 2426 }; 2427 2428 /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2429 2430 /* Start functions for struct config_item_type target_core_alua_cit */ 2431 2432 /* 2433 * target_core_alua_cit is a ConfigFS group that lives under 2434 * /sys/kernel/config/target/core/alua. There are default groups 2435 * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2436 * target_core_alua_cit in target_core_init_configfs() below. 2437 */ 2438 static struct config_item_type target_core_alua_cit = { 2439 .ct_item_ops = NULL, 2440 .ct_attrs = NULL, 2441 .ct_owner = THIS_MODULE, 2442 }; 2443 2444 /* End functions for struct config_item_type target_core_alua_cit */ 2445 2446 /* Start functions for struct config_item_type target_core_stat_cit */ 2447 2448 static struct config_group *target_core_stat_mkdir( 2449 struct config_group *group, 2450 const char *name) 2451 { 2452 return ERR_PTR(-ENOSYS); 2453 } 2454 2455 static void target_core_stat_rmdir( 2456 struct config_group *group, 2457 struct config_item *item) 2458 { 2459 return; 2460 } 2461 2462 static struct configfs_group_operations target_core_stat_group_ops = { 2463 .make_group = &target_core_stat_mkdir, 2464 .drop_item = &target_core_stat_rmdir, 2465 }; 2466 2467 static struct config_item_type target_core_stat_cit = { 2468 .ct_group_ops = &target_core_stat_group_ops, 2469 .ct_owner = THIS_MODULE, 2470 }; 2471 2472 /* End functions for struct config_item_type target_core_stat_cit */ 2473 2474 /* Start functions for struct config_item_type target_core_hba_cit */ 2475 2476 static struct config_group *target_core_make_subdev( 2477 struct config_group *group, 2478 const char *name) 2479 { 2480 struct t10_alua_tg_pt_gp *tg_pt_gp; 2481 struct se_subsystem_api *t; 2482 struct config_item *hba_ci = &group->cg_item; 2483 struct se_hba *hba = item_to_hba(hba_ci); 2484 struct se_device *dev; 2485 struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; 2486 struct config_group *dev_stat_grp = NULL; 2487 int errno = -ENOMEM, ret; 2488 2489 ret = mutex_lock_interruptible(&hba->hba_access_mutex); 2490 if (ret) 2491 return ERR_PTR(ret); 2492 /* 2493 * Locate the struct se_subsystem_api from parent's struct se_hba. 2494 */ 2495 t = hba->transport; 2496 2497 dev = target_alloc_device(hba, name); 2498 if (!dev) 2499 goto out_unlock; 2500 2501 dev_cg = &dev->dev_group; 2502 2503 dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 2504 GFP_KERNEL); 2505 if (!dev_cg->default_groups) 2506 goto out_free_device; 2507 2508 config_group_init_type_name(dev_cg, name, &target_core_dev_cit); 2509 config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 2510 &target_core_dev_attrib_cit); 2511 config_group_init_type_name(&dev->dev_pr_group, "pr", 2512 &target_core_dev_pr_cit); 2513 config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 2514 &target_core_dev_wwn_cit); 2515 config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 2516 "alua", &target_core_alua_tg_pt_gps_cit); 2517 config_group_init_type_name(&dev->dev_stat_grps.stat_group, 2518 "statistics", &target_core_stat_cit); 2519 2520 dev_cg->default_groups[0] = &dev->dev_attrib.da_group; 2521 dev_cg->default_groups[1] = &dev->dev_pr_group; 2522 dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; 2523 dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; 2524 dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; 2525 dev_cg->default_groups[5] = NULL; 2526 /* 2527 * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2528 */ 2529 tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 2530 if (!tg_pt_gp) 2531 goto out_free_dev_cg_default_groups; 2532 dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 2533 2534 tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 2535 tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2536 GFP_KERNEL); 2537 if (!tg_pt_gp_cg->default_groups) { 2538 pr_err("Unable to allocate tg_pt_gp_cg->" 2539 "default_groups\n"); 2540 goto out_free_tg_pt_gp; 2541 } 2542 2543 config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 2544 "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 2545 tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; 2546 tg_pt_gp_cg->default_groups[1] = NULL; 2547 /* 2548 * Add core/$HBA/$DEV/statistics/ default groups 2549 */ 2550 dev_stat_grp = &dev->dev_stat_grps.stat_group; 2551 dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, 2552 GFP_KERNEL); 2553 if (!dev_stat_grp->default_groups) { 2554 pr_err("Unable to allocate dev_stat_grp->default_groups\n"); 2555 goto out_free_tg_pt_gp_cg_default_groups; 2556 } 2557 target_stat_setup_dev_default_groups(dev); 2558 2559 mutex_unlock(&hba->hba_access_mutex); 2560 return dev_cg; 2561 2562 out_free_tg_pt_gp_cg_default_groups: 2563 kfree(tg_pt_gp_cg->default_groups); 2564 out_free_tg_pt_gp: 2565 core_alua_free_tg_pt_gp(tg_pt_gp); 2566 out_free_dev_cg_default_groups: 2567 kfree(dev_cg->default_groups); 2568 out_free_device: 2569 target_free_device(dev); 2570 out_unlock: 2571 mutex_unlock(&hba->hba_access_mutex); 2572 return ERR_PTR(errno); 2573 } 2574 2575 static void target_core_drop_subdev( 2576 struct config_group *group, 2577 struct config_item *item) 2578 { 2579 struct config_group *dev_cg = to_config_group(item); 2580 struct se_device *dev = 2581 container_of(dev_cg, struct se_device, dev_group); 2582 struct se_hba *hba; 2583 struct config_item *df_item; 2584 struct config_group *tg_pt_gp_cg, *dev_stat_grp; 2585 int i; 2586 2587 hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 2588 2589 mutex_lock(&hba->hba_access_mutex); 2590 2591 dev_stat_grp = &dev->dev_stat_grps.stat_group; 2592 for (i = 0; dev_stat_grp->default_groups[i]; i++) { 2593 df_item = &dev_stat_grp->default_groups[i]->cg_item; 2594 dev_stat_grp->default_groups[i] = NULL; 2595 config_item_put(df_item); 2596 } 2597 kfree(dev_stat_grp->default_groups); 2598 2599 tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 2600 for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { 2601 df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; 2602 tg_pt_gp_cg->default_groups[i] = NULL; 2603 config_item_put(df_item); 2604 } 2605 kfree(tg_pt_gp_cg->default_groups); 2606 /* 2607 * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 2608 * directly from target_core_alua_tg_pt_gp_release(). 2609 */ 2610 dev->t10_alua.default_tg_pt_gp = NULL; 2611 2612 for (i = 0; dev_cg->default_groups[i]; i++) { 2613 df_item = &dev_cg->default_groups[i]->cg_item; 2614 dev_cg->default_groups[i] = NULL; 2615 config_item_put(df_item); 2616 } 2617 /* 2618 * se_dev is released from target_core_dev_item_ops->release() 2619 */ 2620 config_item_put(item); 2621 mutex_unlock(&hba->hba_access_mutex); 2622 } 2623 2624 static struct configfs_group_operations target_core_hba_group_ops = { 2625 .make_group = target_core_make_subdev, 2626 .drop_item = target_core_drop_subdev, 2627 }; 2628 2629 CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); 2630 #define SE_HBA_ATTR(_name, _mode) \ 2631 static struct target_core_hba_attribute \ 2632 target_core_hba_##_name = \ 2633 __CONFIGFS_EATTR(_name, _mode, \ 2634 target_core_hba_show_attr_##_name, \ 2635 target_core_hba_store_attr_##_name); 2636 2637 #define SE_HBA_ATTR_RO(_name) \ 2638 static struct target_core_hba_attribute \ 2639 target_core_hba_##_name = \ 2640 __CONFIGFS_EATTR_RO(_name, \ 2641 target_core_hba_show_attr_##_name); 2642 2643 static ssize_t target_core_hba_show_attr_hba_info( 2644 struct se_hba *hba, 2645 char *page) 2646 { 2647 return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 2648 hba->hba_id, hba->transport->name, 2649 TARGET_CORE_CONFIGFS_VERSION); 2650 } 2651 2652 SE_HBA_ATTR_RO(hba_info); 2653 2654 static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, 2655 char *page) 2656 { 2657 int hba_mode = 0; 2658 2659 if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 2660 hba_mode = 1; 2661 2662 return sprintf(page, "%d\n", hba_mode); 2663 } 2664 2665 static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, 2666 const char *page, size_t count) 2667 { 2668 struct se_subsystem_api *transport = hba->transport; 2669 unsigned long mode_flag; 2670 int ret; 2671 2672 if (transport->pmode_enable_hba == NULL) 2673 return -EINVAL; 2674 2675 ret = strict_strtoul(page, 0, &mode_flag); 2676 if (ret < 0) { 2677 pr_err("Unable to extract hba mode flag: %d\n", ret); 2678 return -EINVAL; 2679 } 2680 2681 if (hba->dev_count) { 2682 pr_err("Unable to set hba_mode with active devices\n"); 2683 return -EINVAL; 2684 } 2685 2686 ret = transport->pmode_enable_hba(hba, mode_flag); 2687 if (ret < 0) 2688 return -EINVAL; 2689 if (ret > 0) 2690 hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 2691 else if (ret == 0) 2692 hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 2693 2694 return count; 2695 } 2696 2697 SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); 2698 2699 CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); 2700 2701 static void target_core_hba_release(struct config_item *item) 2702 { 2703 struct se_hba *hba = container_of(to_config_group(item), 2704 struct se_hba, hba_group); 2705 core_delete_hba(hba); 2706 } 2707 2708 static struct configfs_attribute *target_core_hba_attrs[] = { 2709 &target_core_hba_hba_info.attr, 2710 &target_core_hba_hba_mode.attr, 2711 NULL, 2712 }; 2713 2714 static struct configfs_item_operations target_core_hba_item_ops = { 2715 .release = target_core_hba_release, 2716 .show_attribute = target_core_hba_attr_show, 2717 .store_attribute = target_core_hba_attr_store, 2718 }; 2719 2720 static struct config_item_type target_core_hba_cit = { 2721 .ct_item_ops = &target_core_hba_item_ops, 2722 .ct_group_ops = &target_core_hba_group_ops, 2723 .ct_attrs = target_core_hba_attrs, 2724 .ct_owner = THIS_MODULE, 2725 }; 2726 2727 static struct config_group *target_core_call_addhbatotarget( 2728 struct config_group *group, 2729 const char *name) 2730 { 2731 char *se_plugin_str, *str, *str2; 2732 struct se_hba *hba; 2733 char buf[TARGET_CORE_NAME_MAX_LEN]; 2734 unsigned long plugin_dep_id = 0; 2735 int ret; 2736 2737 memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 2738 if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 2739 pr_err("Passed *name strlen(): %d exceeds" 2740 " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 2741 TARGET_CORE_NAME_MAX_LEN); 2742 return ERR_PTR(-ENAMETOOLONG); 2743 } 2744 snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 2745 2746 str = strstr(buf, "_"); 2747 if (!str) { 2748 pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 2749 return ERR_PTR(-EINVAL); 2750 } 2751 se_plugin_str = buf; 2752 /* 2753 * Special case for subsystem plugins that have "_" in their names. 2754 * Namely rd_direct and rd_mcp.. 2755 */ 2756 str2 = strstr(str+1, "_"); 2757 if (str2) { 2758 *str2 = '\0'; /* Terminate for *se_plugin_str */ 2759 str2++; /* Skip to start of plugin dependent ID */ 2760 str = str2; 2761 } else { 2762 *str = '\0'; /* Terminate for *se_plugin_str */ 2763 str++; /* Skip to start of plugin dependent ID */ 2764 } 2765 2766 ret = strict_strtoul(str, 0, &plugin_dep_id); 2767 if (ret < 0) { 2768 pr_err("strict_strtoul() returned %d for" 2769 " plugin_dep_id\n", ret); 2770 return ERR_PTR(-EINVAL); 2771 } 2772 /* 2773 * Load up TCM subsystem plugins if they have not already been loaded. 2774 */ 2775 transport_subsystem_check_init(); 2776 2777 hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 2778 if (IS_ERR(hba)) 2779 return ERR_CAST(hba); 2780 2781 config_group_init_type_name(&hba->hba_group, name, 2782 &target_core_hba_cit); 2783 2784 return &hba->hba_group; 2785 } 2786 2787 static void target_core_call_delhbafromtarget( 2788 struct config_group *group, 2789 struct config_item *item) 2790 { 2791 /* 2792 * core_delete_hba() is called from target_core_hba_item_ops->release() 2793 * -> target_core_hba_release() 2794 */ 2795 config_item_put(item); 2796 } 2797 2798 static struct configfs_group_operations target_core_group_ops = { 2799 .make_group = target_core_call_addhbatotarget, 2800 .drop_item = target_core_call_delhbafromtarget, 2801 }; 2802 2803 static struct config_item_type target_core_cit = { 2804 .ct_item_ops = NULL, 2805 .ct_group_ops = &target_core_group_ops, 2806 .ct_attrs = NULL, 2807 .ct_owner = THIS_MODULE, 2808 }; 2809 2810 /* Stop functions for struct config_item_type target_core_hba_cit */ 2811 2812 static int __init target_core_init_configfs(void) 2813 { 2814 struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; 2815 struct config_group *lu_gp_cg = NULL; 2816 struct configfs_subsystem *subsys; 2817 struct t10_alua_lu_gp *lu_gp; 2818 int ret; 2819 2820 pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 2821 " Engine: %s on %s/%s on "UTS_RELEASE"\n", 2822 TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 2823 2824 subsys = target_core_subsystem[0]; 2825 config_group_init(&subsys->su_group); 2826 mutex_init(&subsys->su_mutex); 2827 2828 ret = init_se_kmem_caches(); 2829 if (ret < 0) 2830 return ret; 2831 /* 2832 * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 2833 * and ALUA Logical Unit Group and Target Port Group infrastructure. 2834 */ 2835 target_cg = &subsys->su_group; 2836 target_cg->default_groups = kmalloc(sizeof(struct config_group) * 2, 2837 GFP_KERNEL); 2838 if (!target_cg->default_groups) { 2839 pr_err("Unable to allocate target_cg->default_groups\n"); 2840 ret = -ENOMEM; 2841 goto out_global; 2842 } 2843 2844 config_group_init_type_name(&target_core_hbagroup, 2845 "core", &target_core_cit); 2846 target_cg->default_groups[0] = &target_core_hbagroup; 2847 target_cg->default_groups[1] = NULL; 2848 /* 2849 * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 2850 */ 2851 hba_cg = &target_core_hbagroup; 2852 hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2853 GFP_KERNEL); 2854 if (!hba_cg->default_groups) { 2855 pr_err("Unable to allocate hba_cg->default_groups\n"); 2856 ret = -ENOMEM; 2857 goto out_global; 2858 } 2859 config_group_init_type_name(&alua_group, 2860 "alua", &target_core_alua_cit); 2861 hba_cg->default_groups[0] = &alua_group; 2862 hba_cg->default_groups[1] = NULL; 2863 /* 2864 * Add ALUA Logical Unit Group and Target Port Group ConfigFS 2865 * groups under /sys/kernel/config/target/core/alua/ 2866 */ 2867 alua_cg = &alua_group; 2868 alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2869 GFP_KERNEL); 2870 if (!alua_cg->default_groups) { 2871 pr_err("Unable to allocate alua_cg->default_groups\n"); 2872 ret = -ENOMEM; 2873 goto out_global; 2874 } 2875 2876 config_group_init_type_name(&alua_lu_gps_group, 2877 "lu_gps", &target_core_alua_lu_gps_cit); 2878 alua_cg->default_groups[0] = &alua_lu_gps_group; 2879 alua_cg->default_groups[1] = NULL; 2880 /* 2881 * Add core/alua/lu_gps/default_lu_gp 2882 */ 2883 lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 2884 if (IS_ERR(lu_gp)) { 2885 ret = -ENOMEM; 2886 goto out_global; 2887 } 2888 2889 lu_gp_cg = &alua_lu_gps_group; 2890 lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2891 GFP_KERNEL); 2892 if (!lu_gp_cg->default_groups) { 2893 pr_err("Unable to allocate lu_gp_cg->default_groups\n"); 2894 ret = -ENOMEM; 2895 goto out_global; 2896 } 2897 2898 config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 2899 &target_core_alua_lu_gp_cit); 2900 lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; 2901 lu_gp_cg->default_groups[1] = NULL; 2902 default_lu_gp = lu_gp; 2903 /* 2904 * Register the target_core_mod subsystem with configfs. 2905 */ 2906 ret = configfs_register_subsystem(subsys); 2907 if (ret < 0) { 2908 pr_err("Error %d while registering subsystem %s\n", 2909 ret, subsys->su_group.cg_item.ci_namebuf); 2910 goto out_global; 2911 } 2912 pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 2913 " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" 2914 " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 2915 /* 2916 * Register built-in RAMDISK subsystem logic for virtual LUN 0 2917 */ 2918 ret = rd_module_init(); 2919 if (ret < 0) 2920 goto out; 2921 2922 ret = core_dev_setup_virtual_lun0(); 2923 if (ret < 0) 2924 goto out; 2925 2926 return 0; 2927 2928 out: 2929 configfs_unregister_subsystem(subsys); 2930 core_dev_release_virtual_lun0(); 2931 rd_module_exit(); 2932 out_global: 2933 if (default_lu_gp) { 2934 core_alua_free_lu_gp(default_lu_gp); 2935 default_lu_gp = NULL; 2936 } 2937 if (lu_gp_cg) 2938 kfree(lu_gp_cg->default_groups); 2939 if (alua_cg) 2940 kfree(alua_cg->default_groups); 2941 if (hba_cg) 2942 kfree(hba_cg->default_groups); 2943 kfree(target_cg->default_groups); 2944 release_se_kmem_caches(); 2945 return ret; 2946 } 2947 2948 static void __exit target_core_exit_configfs(void) 2949 { 2950 struct configfs_subsystem *subsys; 2951 struct config_group *hba_cg, *alua_cg, *lu_gp_cg; 2952 struct config_item *item; 2953 int i; 2954 2955 subsys = target_core_subsystem[0]; 2956 2957 lu_gp_cg = &alua_lu_gps_group; 2958 for (i = 0; lu_gp_cg->default_groups[i]; i++) { 2959 item = &lu_gp_cg->default_groups[i]->cg_item; 2960 lu_gp_cg->default_groups[i] = NULL; 2961 config_item_put(item); 2962 } 2963 kfree(lu_gp_cg->default_groups); 2964 lu_gp_cg->default_groups = NULL; 2965 2966 alua_cg = &alua_group; 2967 for (i = 0; alua_cg->default_groups[i]; i++) { 2968 item = &alua_cg->default_groups[i]->cg_item; 2969 alua_cg->default_groups[i] = NULL; 2970 config_item_put(item); 2971 } 2972 kfree(alua_cg->default_groups); 2973 alua_cg->default_groups = NULL; 2974 2975 hba_cg = &target_core_hbagroup; 2976 for (i = 0; hba_cg->default_groups[i]; i++) { 2977 item = &hba_cg->default_groups[i]->cg_item; 2978 hba_cg->default_groups[i] = NULL; 2979 config_item_put(item); 2980 } 2981 kfree(hba_cg->default_groups); 2982 hba_cg->default_groups = NULL; 2983 /* 2984 * We expect subsys->su_group.default_groups to be released 2985 * by configfs subsystem provider logic.. 2986 */ 2987 configfs_unregister_subsystem(subsys); 2988 kfree(subsys->su_group.default_groups); 2989 2990 core_alua_free_lu_gp(default_lu_gp); 2991 default_lu_gp = NULL; 2992 2993 pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 2994 " Infrastructure\n"); 2995 2996 core_dev_release_virtual_lun0(); 2997 rd_module_exit(); 2998 release_se_kmem_caches(); 2999 } 3000 3001 MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3002 MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3003 MODULE_LICENSE("GPL"); 3004 3005 module_init(target_core_init_configfs); 3006 module_exit(target_core_exit_configfs); 3007